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On March 27, 1998, the US federal agency FDA authorized the sale in pharmacies of the drug sildenafil to treat erectile dysfunction – often also called male impotence – under the brand name Viagra. It was a before and after for many couples in which at least one of the members suffered from this problem, derived from psychological or physiological disorders. Many men who until then had had to undergo costly and painful treatments to achieve an erection, saw their problem resulted with the intake of a simple, though expensive, pill. Read more about where to get Viagra online at www.pillmerit.com pharmacy website